Question

what are the uses of chemical changes?

Answer 1

Chemical reactions that can be used as energy sources includeBurning methaneBurning octaneMagnesium reacting with copper sulfateThe conversion of glucose into carbon dioxide and water.Chemical reactions that are used to make new materials includeWater and carbon dioxide reacting to form glucose and oxygenThe conversion of glucose into carbon dioxide and waterThe reaction of polyisocyanate and polyol to form polyurethaneThe reaction between magnesium and copper sulfateThe reaction of haemoglobin and oxygen to form oxyhaemoglobinThe conversion of ethene into polyetheneThe reaction of 1,2-diaminohexane and hexanedioic acid to form nylon-6,6The burning of methane to form carbon dioxide and waterThe burning of octane to form carbon dioxide and waterThe conversion of iron ore to iron.Chemical reactions that are important in biological systems includeWater and carbon dioxide reacting to form glucose and oxygenThe conversion of glucose into carbon dioxide and waterThe reaction of haemoglobin and oxygen to form oxyhaemoglobin.

Answer 2

chemical change is any change that results in the formation of new chemical substances. it involves making and breaking of bonds between atoms. EG: iron rusting